SARIS Bones EX Trunk Rack - 2-Bike - Black wahoopromo The Shimano BB-MT501 bottom bracket

The Shimano BB-MT501 bottom bracket for Hollowtech II provides better sealing and rotation to delivery high driving efficiency

CNC-machined

Reflex sidewall for safety

completely re-engineered for 1x systems and the innovative X-Sync 2 chainrings

Also fits "Power Spline" cranks from SRAM using the 8mm thread bolt

SARIS Bones EX Trunk Rack - 2-Bike - Black wahoopromo The Shimano BB-MT501 bottom bracketThe Bones EX features an extended leg that avoids contact with most spoilers found on many of the best selling sedans, hatch backs and SUVs. With the extended leg, the Bones EX fits 20% more vehicles than the original Bones and it includes premium bike hold downs and a handy strap management system. Best fit around: compatible with the largest array of popular vehicles, including those with spoilers Integrated strap management eliminates flapping